People using BSD licensed code have an incentive to contribute changes that aren't "secret sauce" to make maintaining their forks easier. Sony has pushed code t

People using BSD licensed code have an incentive to contribute changes that aren't "secret sauce" to make maintaining their forks easier. Sony has pushed code they wrote for the PS4 back upstream to make keeping current with upstream easier, for example. Juniper still pushes patches upstream, and they've got a much larger team working on Junos than Sony does on Orbis.